Infineon Technologies ICE3A0565FKLA1

Overview

ICE3A0565FKLA1 from Infineon Technologies is a fully integrated off-line SMPS current-mode controller with built-in 650V depletion CoolMOS™ and startup cell, housed in PG-DIP-8 package. It delivers 25W continuous input power at 230VAC ±15%, operates at fixed 100kHz switching frequency, features <±5% peak current limiting tolerance, and enables <100mW standby power via Active Burst Mode - used in compact AC/DC adapters for consumer electronics.

For engineers reviewing the ICE3A0565FKLA1 datasheet, ICE3A0565FKLA1 pinout, ICE3A0565FKLA1 application, or ICE3A0565FKLA1 equivalent, key selection criteria include its integrated high-voltage switch, precise current sensing, Auto Restart protection modes, and DIP-8 creepage-compliant isolation for Class II designs.

Technical Context

The ICE3A0565FKLA1 implements a current-mode PWM control architecture with internal oscillator (100kHz), leading-edge blanking, and propagation delay compensation to ensure stable peak-current regulation under dynamic load jumps. Its control unit integrates adjustable blanking window timing and feedback-controlled Active Burst Mode entry/exit logic.

Protection is implemented via dedicated Auto Restart circuits for overtemperature, VCC overvoltage, output open-loop, overload, and VCC undervoltage conditions - all triggering latched restart after fault clearance. The integrated 650V CoolMOS™ drain-source path shares pins 4 and 5 in PG-DIP-8, with internal shorting confirmed per datasheet Figure 1.

Key Specifications

Pinout & Package

ICE3A0565FKLA1 uses the PG-DIP-8 package (8-pin dual in-line plastic), with creepage distance optimized for reinforced insulation in Class II AC/DC converters. Pins 4 and 5 are internally shorted as common Drain connection for the integrated CoolMOS™ transistor.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar off-line SMPS controller applications.

Compared with ICE3B0565FKLA1 and ICE3A0565Z, the ICE3A0565FKLA1 uniquely balances 100kHz efficiency, DIP-8 creepage compliance, and integrated startup - making it optimal for certified consumer adapters where size, cost, and safety coexist.

Availability

ICE3A0565FKLA1 is available at Aetrix Electronics and suitable for USB-C wall adapters, smart home power supplies, LED downlight drivers, and industrial auxiliary supplies requiring stable component supply across long-lifecycle programs.

Supply support for ICE3A0565FKLA1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies AG is a German semiconductor manufacturer specializing in power management, automotive, and industrial control ICs, with global R&D and manufacturing infrastructure.

The CoolSET™-F3 product line targets cost-sensitive, safety-critical off-line SMPS designs - integrating HV switches and controllers to reduce BOM count and accelerate time-to-certification for Class II AC/DC systems.

FAQ

What is the maximum continuous input power supported by ICE3A0565FKLA1?

The ICE3A0565FKLA1 supports up to 25W continuous input power at 230VAC ±15% under open-frame conditions (T_a=75°C, T_j=125°C, no heatsink). This rating assumes proper PCB copper area for thermal dissipation and accounts for both CoolMOS™ conduction losses and controller quiescent consumption.

Does ICE3A0565FKLA1 require an external startup resistor?

No - ICE3A0565FKLA1 integrates a 650V depletion CoolMOS™ startup cell that draws current directly from the rectified AC line, eliminating the need for external high-voltage resistors and associated power loss and reliability concerns.

How does Active Burst Mode improve light-load performance?

Active Burst Mode dynamically modulates switching bursts while keeping the controller fully active - enabling immediate response to load steps without output voltage sag. It achieves <100mW standby power and <1% output ripple at no-load by synchronizing burst intervals with feedback loop dynamics.

What protection features are implemented in Auto Restart Mode?

ICE3A0565FKLA1 implements five independent Auto Restart protections: overtemperature (OTP), VCC overvoltage (OVP), output overload/open-loop (OLP/OOL), and VCC undervoltage (UVP). Each triggers a safe shutdown followed by automatic restart after fault clearance - no manual reset required.